Parallel-jaw pliers



A. MAE.

PARALLEL JAW PL|ERS APPLICATION FILED NOV. 4, I919.

Patehted Aug. 31,1920.

avwentoz H. Mae

a ike mam;

PARALLEL-JAW PLInns.

Specification of Letters Patent.

Application filed November 4. 1919. Serial No; 335.636.-

T 0 (all whom it may concern: I

Be it known that I, ANTON MAE, a citizen of the United States, residingat New Haven, in the county of New Haven and State of Connecticut, haveinvented certain new and useful Improvements in Parallel-Jaw Pliers, ofwhich the following is a specification.

This invention relates to improvements in combination tools, and moreparticularly to a type of combination tool embodying wire cuttersassociated with a pair of parallel plier aws.

The principal objects of the present invention are: first, to provide apair of simultaneously operated wire cutters associated with a pair ofparallel plier jaws, in order to effect actuation of the wire cuttersupon movement of the plier jaws; and second, to so arrange the wirecutters with the plier jaws that multiple leverage will be obtained forincreasing the biting power of the wire cutters, and to accomplish thisend the leverage afforded by the handles of the device is compounded bythe actuating members associated with the jaws, thus materiallysimplifying the construction of the tool and increasing its eflieiency.

Furthermore the tool is so constructed that Attention is invited to myprior Patent #1,313,399, issued August 19, 1919, on-pliers, upon whichthe present invention is a modification and an improvement.

For a full understanding of the invention reference is to be had to thefollowing description and accompanying drawings, in which:

Figure 1 is an enlarged perspective view of the jaw portion of thedevice,

Fig. 2 is a side elevation of the pliers,

Fig. 3 is a transverse sectional'view through one of the handles of thepliers showing in detail the connection of the jaw portion and theassembled relation thereof, and

Fig. 4 is a fragmentary perspective View in section showing in detailthe wire cutter mounted in the jaw portions.

In the drawings wherein like characters ofreference indicate like orsimilar parts throughout the several views, A and B designate a pair; ofparallel plier jaws, each provided with the usual serratedsurface C forfrictionallyengaging an object placed between the pairof jaws. Reducedexten sions l and 2 formed on therespective jaws opposite the nosesthereof and having their opposed edgescut away, are sliclab-ly carriedin sleeves 3 which are pivotally mounted as at 1 in the gripportio-nsrof the handles A and B and have retaining bars 5 mountedtherein for an obvious purpose.

As both thejaws A and B- differ materially in certain details ofconstruction I shall take them up separately for the sake of clarity andthen describe their combined operation in order to show how other partsof the invention (hereinafter described) are associated with them.Referring particularly to the jaw B, a substantially arcuate arm 6 isformed thereon adjacent the reduced extension 2 thereof, and has theedge'thereof opposed to the outer edge of thejaw ground on both sides toprovide a knife edge 7 which constitutes one ofthe elements of one ofthe wire cutters, hereinafterdescribed in detail. Adjacent the arm 6 andin line with the knife edge 7 is a dovetailed groove 8 adapted forreception of an arm 9 secured within a dovetail recess in the jawA, asat 9 and provided with a knife edge 10 in registration with the knifeedge 7 on the arm 6.

The outer edge of the jaw A is ground down at both sides to form a knifeedge 11 which is adapted to coact with a knife edge 12 formed on theauxiliary jaw member 13 which has its reduced shank 14 mounted on on thelateral extensionl? on the jaw A.

Patented Aug. er, teen.

The arm 18 on the jaw B is received within a reduced portion1-9 in theaw A and en-;

gages the shoulder formed thereby to lie flush with the outer surfacethereof, and is pivoted as at 20 to the end of the shank 14 of theauxiliary jaw 13 whereby to move the same upon actuation of jaws A andB.

The bifurcated handle elements A and B are crossed and the arms of thebifurcations 06 and l thereof are pivoted as at 21 and secured by pins'22 to the jaws A and B respectively, suitable openings 28 being provided in the jaw members for receiving the pins as illustrated in Fig.1.

The arms are struck outwardly for a distance to receive thearms y andclose the of the jaw B and the auxiliary jaw 13 is positioned andsecured by the pin 15 between the ears .16 with its shank 14 pivotallyengaged by the arm 18 on the jaw B. The knife edge 12 will consequentlybe in registration with the knife edge 11 on the jaw A. "The handleelements are then crossed and secured as at 21' and the extensions l and2 of the jaws A and B placed in the sleeves 3 pivoted in the gripsections thereof. The handles A and B are then secured as at 22 to thejaws A and B.

In operation upon moving the jaws A and B the arm 9 is 'moved in thedovetailed groove 8 into engagement with'the knife construction,

edge 7 on the arm 6 thus cutting any wires that would be disposedtherebetween and in the same operation the auxiliary jaw 13 is moved sothat the knife edges 11 and 12 engage for a like purpose.

WVhile I have shown and described the preferred embodiment of myinvention it will be understood that minor changes in combination andarrangement of parts may be made without departing from the spirit andscope of the invention as claimed.

vVhat I claim is: r 7

1. The combination in pliers having relatively movable jaws, one ofwhich is provided with a knife edge; of an arm on one of the jaws havinga knife edge, a second arm having a knife edge on the other jaw andadaptedto approach the knife edge 011 the first jaw upon relativemovement of the jaws, an auxiliary jaw having a knife edge, and meansconnected with the jaws for moving the same relative to each other andactuating the auxiliary jaw to approach the knife edge of thefirst-named jaw.

2. The combination in pliers having relatively movable jaws, one ofwhich is provided with a knife edge; of an arcuate arm on one of thejaws ground to form a knife edge, an arm on the other of the jaws groundto form a knife edge and adapted to approach the first-named arm onmovement of the jaws relative to each other, an auxiliary jaw having aknife edge and con nected with the second-named jaw, and means foractuating the aws whereby the knife edge of the auxiliary jaw is movedto approach the knife edge of the first-named v 3. vThe combination inpliers having relatively movable jaws, one of which is pro- 4. Thecombination in pliers having rela tively movable jaws, one of which isprovided with a knife edge; of'an arcuate arm on one of the jaws groundto form a knife edge, an arm. on the other of the jaws ground to form aknife edge and adapted so approach the first-named arm on movement ofthe jaws relative to each other, ears formed'on an extension of thefirst-named jaw, an auxiliary aw pivoted between the ears on saidfirst-named aw, a second arm on the second-named aw pivotally connect- 2ed with the auxiliary jaw, and means for actuating said jaws whereby therespective knife edges are caused to approach one another to sever anintervening wire.

5.-Tn pliers of the character described,

relatively movable jaws, one of said jaws being provided with a knife'edge, an arm pivotallysupported upon the jaw having the'knife edge andprovided with a mum panion knife edge to cooperate withthe latter, meansactuating the arm and acted upon by the other aw' to effect the approachof the knife edges toward each other, and means for actuating the jawsfor the opening and closing thereof.

Intestimony whereof, I aflix my signa ture hereto.

' ,ANTON A Q

